CN1284653C

CN1284653C - Hydraulic percussion apparatus

Info

Publication number: CN1284653C
Application number: CNB018127231A
Authority: CN
Inventors: 贝尔纳·皮拉
Original assignee: Montabert SAS
Current assignee: Montabert SAS
Priority date: 2000-07-13
Filing date: 2001-07-10
Publication date: 2006-11-15
Anticipated expiration: 2021-07-10
Also published as: DE60133739T2; ZA200210249B; ATE392996T1; NO319455B1; US20030183402A1; US6829975B2; CA2415358A1; FR2811602A1; BR0112446A; NO20030124L; IL153852A; IL153852A0; ES2301556T3; EP1299212B1; EP1299212A1; WO2002006013A1; DK1299212T3; KR100758673B1; AU7642301A; DE60133739D1

Abstract

The invention concerns an apparatus comprising a body (1) wherein is mounted a cylinder (2) inside which an impact piston (22) is guided, the fluid distribution providing the motion of the piston (22) being produced by a distributor (23) housed in a distribution box (3) mounted in the body. The cylinder (2) and the distribution box (3) are entirely contained in the enclosure defined by the body (1), the cylinder (2) is mechanically supported by one of its ends on the body (1), the distribution box (3) is mounted coaxial to the cylinder and is mechanically supported thereon and the surfaces perpendicular to the axis of the apparatus, subjected to pressure, are arranged and dimensioned such that the resultant of the hydraulic forces applied on the parts, cylinder (2), distribution box (3) are directed in the same direction towards a support located in the body of the apparatus, during all the phases of the operating cycle thereof.

Description

Hydraulic impact equipment

Technical field

Theme of the present invention is a kind of hydraulic impact equipment.

Background technology

A kind of hydraulic impact equipment comprises body, and a cylinder body is installed in body, drives guiding one impact piston by incompressible fluid and seesaw in cylinder body, and piston slap is installed in an instrument of body lower end.It is to be finished by the distributor in the distributor box that is contained in the body that the fluid of driven plunger motion distributes.

Document EP 0 638 013 relates to a kind of hydraulic impact equipment, the various linings and the distributor of the cylinder body of impact piston and their cylinder body of formation guiding are maintained by a top cover in body in this impact device, and described top cover itself then is fixed on the body by screw rod.These screw rod mechanisms fixing various piece, but produce following shortcoming:

-distribute the fastening force that is decided by each screw conveyer fully by lid institute applied pressure.At present, the short screw of tension on the civil engineering working equipment generally finished by reversing, thereby has all uncertain factors relevant with this stress: the uneven frictional force in the screw flight, and the precision of fastening apparatus, or the like.Therefore the fastening meeting of the lid distortion of piston guide system that impacts.

-lid can not contact with body with liner simultaneously, because necessary function gap may cause the lid bending, and this can cause bent screws, and this can damage their fatigue strength.

The standing screw of-lid slight loosening, by liner relative motion each other, the area supported that can wear and tear, and cause gradually and misalign, this can damage the hydraulic pilot of impact piston.

Summary of the invention

Target of the present invention is, a kind of hydraulic impact equipment is provided, and in this hydraulic impact equipment, be installed in that various parts in the body cavity do not bear because the stress that fastening screw produces, thereby avoid above-mentioned shortcoming.

For this reason, hydraulic impact equipment comprises a body, one cylinder body is installed in described body, in described cylinder body, guiding an impact piston, described impact piston is being driven by incompressible fluid and is seesawing, and described piston slap one is installed on the instrument of body lower end, and the fluid distribution that promotes the piston motion is what to be finished by a distributor in the distributor box that is installed in the body, it is characterized in that described cylinder body and described distributor box are completely contained in the cavity that is defined by body; Described Boring mill is to being supported on the described body; Described distributor box is installed coaxially with respect to described cylinder body and mechanical twelve Earthly Branches support on described cylinder body; Settle and selected size by this way on the surface of bearing pressure perpendicular to described equipment axis: be applied to making a concerted effort of hydraulic coupling on a plurality of parts-cylinder bodies and the distributor box, in the whole process of the described equipment cycle of operation, point to a bearing that is arranged in described equipment body by identical direction.

According to an embodiment, this equipment also comprises a distribution lid of settling coaxially with respect to described distributor box, and described distribution lid axially is supported on the described distributor box, settle and select size by this way perpendicular to the described equipment axis and the surface of bearing the distribution lid of pressure: be applied to making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, all point to a direction, it is identical with the resultant direction of power on being applied to miscellaneous part-cylinder body and distributor box.

Find out obviously that from this structure the parts that constitute cylinder body, distributor box and distribution lid are not mechanically fixing by machine body cover as passing by usually.Therefore cover plate body tighten degree on the one hand internal body and on the other hand the globality of a plurality of parts of phase cross-correlation definitely do not have influence because these parts compress mutually securely and are pressed on the body by hydraulic coupling.This just can allow than common situation with the screw rod fastening assembly bigger manufacturing tolerance, and obtains better equipment performance simultaneously, because the danger that disclosed block distortion and impact piston misalign in the prior art is here avoided.

According to a feature of the present invention, the bearing of described body-various parts press on it with surging, are that the end wall in described instrument one side by described cavity constitutes, and described cylinder body is installed in described cavity.

According to another characteristic of the present invention, each parts-cylinder body, distributor box, distribution lid all have two facing surfaces, and high pressure and low pressure are alternately born in first surface, and the area on second surface is bigger than first, and it bears high pressure all the time.

According to a kind of embodiment of this equipment, the cylinder body end face that is supported on the cavity end wall of described body is under the atmospheric pressure, and its relative face always bears high pressure.Therefore cylinder body is pressed on the end wall of described body cavity securely.

According to a kind of possibility, distributor box has two column parts in succession, its part towards piston is sealed by an end wall, described end wall defines a Room with described piston, described chamber alternately is communicated with high pressure and low pressure, its another part-its cross-sectional area is bigger than first, is arranged in another chamber, and described another chamber is all the time by the high-pressure fluid supply.

Its advantage is, an annular wall is stamped in described distribution, its outer surface is supported on the inner surface of described distributor box, its inner surface portion ground is used for the routes distribution device, defines a doughnut to the bottom surface section of described annular wall, and described doughnut connects low pressure line all the time, this annular wall ends at the part in big cross section, described part rests in the end of described distributor box, and is arranged in a Room, and described chamber is all the time for high-pressure fluid is arranged.

According to another embodiment of the present invention, an annular wall is stamped in described distribution, its outer surface rests in the body chamber, its lower surface is supported on the end face of described distributor box, its inner surface portion works to do the routes distribution device, and defines a doughnut therewith, and described doughnut connects low pressure line all the time, this annular wall end at an upper portion thereof ends at a larger cross section portion, and this part is arranged in a chamber of supplying high-pressure fluid all the time.

Description of drawings

In a word, the accompanying drawing with reference to a plurality of embodiment of this equipment of describing in the mode of non-limiting example, will more clearly embody the present invention from following description:

Fig. 1 is the vertical sectional drawing that is equipped with the equipment of first kind of cylinder body distributor assembly;

Fig. 2 is five kinds of variations of the embodiment of Fig. 1 equipment to Fig. 6.

The specific embodiment

The machine that Fig. 1 describes comprises body 1, axially processes a cavity in body, be used as and lay cylinder body 2, and cylinder body 2 rests on the cavity diapire 5, and cavity diapire 5 is positioned at same end with percussion tool 40.Cylinder body 2 is used to guide impact piston 22 to seesaw, and impact piston 22 is all wanted the head of impact tool 40 in each service cycle.Distributor box 3 is installed in the central authorities and axial cavity in the top part of cylinder body 2, installs one in the upper end of distributor box 3 and distributes and cover 4.Distributor 23 is installed in the distributor box, the effect that distributor 23 is brought into play to the supply of equipment incompressible fluid, thus cause that piston seesaws.

Impact piston 22 defines two relative chambers jointly with its cylinder body: the doughnut 13 of a bottom, it bears all the time from the high pressure of pipeline 17, chamber 12 with a top, it alternately bears by distributor 23 selected high pressure and low pressure, so that be applied to the making a concerted effort alternately by a direction then by the effect of other direction ground of pressure on the impact piston.

Distributor box and cylinder body define doughnut 6 jointly, and doughnut 6 bears all the time from the low pressure of pipeline 16.

Distributor 23 defines a doughnut 14 jointly with distributor box 3, and doughnut 14 is known as the control room, and this control room alternately is communicated with high pressure (HP) and low pressure (BP) according to the position of impact piston 22.

Distributor 23, distributor box 3 and distribution are covered 4 and are defined doughnut 15 jointly, and doughnut 15 bears low pressure all the time by pipeline 16.

Keeping and distribute that cover 4 balance be simple, is systematically to be in low pressure BP because define the surface 7 of doughnut 15, and because the high pressure HP in chamber 26 be applied to chamber 26 facing surfaces on, like this keep distribution to cover 4 with surging and down push.Therefore when distributor was in low level, the power that applies is covered in distribution on distributor box be F _Cov(HP-BP) (S ₇), but when distributor is in the position of rise, F _Cov(HP-BP) (S ₇(the S of)-(HP-BP) ₄₀).(HP-BP) (S in the formula ₄₀) power that applies by distributor of representative.

If consider the balance of distributor box 3, this case is at its surface 24 (area S ₂₄) on bear high pressure, surface (the area S that defines by distributor box 3 and cylinder body 2 ₆) bear low pressure BP all the time, surface 20 (the area S that defines by doughnut 15 ₂₀) bear low pressure BP all the time, surface 21 (the area S that defines by doughnut 14 ₂₁) alternately bear high pressure HP and low pressure BP, surface 25 (area S ₂₅) bear high pressure HP all the time, surface 18 (the area S that forms the case diapire and define by upper chamber 12 and cylinder body 2 ₁₈) alternately bear high pressure HP and low pressure BP.

As a result of, distributor box 3 has four kinds of poised states that difference is possible.

Along with piston rises, when distributor is in low level:

S ₂₄+S ₂₀+S ₂₁+S ₂₅＝S ₁₈+S ₆

Be applied to the F that makes a concerted effort of the power on the distributor box _BCan remember conduct:

F _B＝(S ₂₄×HP)+(S ₂₀×BP)+(S ₂₁×BP)+(S ₂₅×HP)-(S ₁₈×BP)-(S ₆×BP)+F _cov+F _DIST＝HP(S ₂₄+S ₂₅)+BP(S ₂₀+S ₂₁-S ₁₈-S ₆)+(HP-BP)(S ₇)+(HP-BP)(S ₄₁-S ₄₀)

F in the formula _Cov=cover the power that is applied on the distributor box by distribution,

F _DIST=distributor is applied to the power on the distributor box,

Draw by first equation now:

S ₂₀+S ₂₁-S ₁₈-S ₆＝-S ₂₄-S ₂₅

Therefore:

F _B＝(HP-BP)(S ₂₄+S ₂₅+S ₇+S ₄₁-S ₄₀)＝(HP-BP)S _t

St is an observable proj ected surface areas above distributor box in the formula.

Like this power that is applied in of distributor box make a concerted effort push the below to with surging.

Equally, along with piston rises, when distributor was positioned at lifting position, at this moment high pressure HP was born in cross section 21.

F _B＝(S ₂₄×HP)+(S ₂₀×BP)+(S ₂₁×HP)+(S ₂₅×HP)-(S ₁₈×BP)-(S ₆×BP)+F _cov＝HP(S ₂₄+S ₂₁+S ₂₅)+BP(S ₂₀-S ₁₈-S ₆)+(HP-BP)(S ₇)-(HP-BP)(S ₄₀)

At this moment

S ₂₀-S ₁₈-S ₆＝-S ₂₄-S ₂₁-S ₂₅

Therefore,

F _B＝(HP-BP)(S ₂₄+S ₂₁+S ₂₅+S ₇-S ₄₀)＝(HP-BP)S _t

Along with piston descends, when distributor was in raised position, at this moment, high pressure HP was born in chamber 14 and chamber 12,

F _B＝(S ₂₄×HP)+(S ₂₀×BP)+(S ₂₁×HP)+(S ₂₅×HP)-(S ₁₈×HP)-(S ₆×BP)+F _cov＝HP(S ₂₄+S ₂₁+S ₂₅-S ₁₈)+BP(S ₂₀-S ₆)+(HP-BP)(S ₇)-(HP-BP)(S ₄₀)

At this moment

S ₂₀-S ₆＝-S ₂₄-S ₂₁-S ₂₅+S ₁₈

Therefore,

F _B＝(HP-BP)(S ₂₄+S ₂₁+S ₂₅-S ₁₈+S ₇-S ₄₀)

At this moment

S ₇-S ₄₀=S ₂₀And S ₆=S ₂₄+ S ₂₀+ S ₂₁+ S ₂₅-S ₁₈

F _B＝(HP-BP)(S ₆)

At this moment distributor box be applied power make a concerted effort surge that continuously pushing is downwards on ground.

Along with piston descends, when distributor is positioned at when dipping, control room 14 is in low pressure BP again and chamber 12 still is in high pressure HP.

F _B＝(S ₂₄×HP)+(S ₂₀×BP)+(S ₂₁×BP)+(S ₂₅×HP)-(S ₁₈×BP)-(S ₆×BP)+F _cov+F _DIST＝HP(S ₂₄+S ₂₅-S ₁₈)+BP(S ₂₀+S ₂₁-S ₆)+(HP-BP)(S ₇)+(HP-BP)(S ₄₁-S ₄₀)

In the formula

S ₂₀+S ₂₁-S ₆＝-S ₂₄-S ₂₅+S ₁₈

Therefore:

F _B＝(HP-BP)(S ₂₄+S ₂₅-S ₁₈+S ₇+S ₄₁-S ₄₀)

In the formula

S ₇+S ₄₁-S ₄₀＝S ₂₀+S ₂₁

F _B＝(HP-BP)(S ₆)

Therefore in all stages of operation, distributor box remains the direction that is pushed to cylinder body with surging.

If we consider the balance of cylinder body 2, (area S on the whole lower plane 5 of cylinder body so ₅) bearing atmospheric pressure Pa, annular surface 8 (is known as area S ₈, be parallel to the projection of surface on 5 one) and bear high pressure HP, surface 9 (area S all the time ₉) bear the pressure (when piston descends, bear high pressure HP, when piston rises, bear low pressure BP) of chamber 12, surface 10 (area S ₁₀) bear low pressure BP all the time, surface 11 (area S ₁₁) bear high pressure HP all the time.If remembering respectively, the various power on the cylinder body of being applied to make F ₅, F ₈, F ₉, F ₁₀And F ₁₁So,

-when piston rises:

F ₅＝S ₅×Pa

F ₈＝S ₈×HP

F ₉＝S ₉×BP

F ₁₀＝S ₁₀×BP

F ₁₁＝S ₁₁×HP

F _B=distributor box is applied to the power on the cylinder body

And S ₅=S ₈+ S ₉+ S ₁₀+ S ₁₁

In addition, the Fc that makes a concerted effort that is applied to power on the cylinder body can be write as:

F _c＝F ₅+F ₈+F ₉+F ₁₀+F ₁₁+F _B

＝-(S ₅×Pa)+(S ₈×HP)+(S ₉×BP)+(S ₁₀×BP)+(S ₁₁×HP)+F _B

F _c＝-(S ₅×Pa)+HP×(S ₈+S ₁₁)+BP×(S ₉+S ₁₀)+F _B

When atmospheric pressure can be ignored with respect to high pressure HP, this just produced:

F _c＝HP(S ₈+S ₁₁)+BP(S ₉+S ₁₀)+(HP-BP)S _t

S in the formula _t=S ₁₀+ S ₉+ S ₄₂(S _t: be the projected area of below distributor box, observing)

F _c＝HP(S ₁₁+S ₁₀+S ₉+S ₄₂)+HP×S ₈-BP×S ₁₂

This is under dynamic condition.

If calculating is to finish under static conditions, acting on institute on the piston strong almost is balance, and

HP * S ₈=BP * S ₄₂, therefore

F _c＝HP(S ₁₁+S ₁₀+S ₉+S ₄₂)

Therefore, cylinder body is kept by high pressure HP and is pushed the below with surging to.

-when piston descends:

F ₅, F ₈, F ₁₀, F ₁₁Remain unchanged F ₉=S ₉* HP

In the case,

F _c≈HP(S ₈+S ₁₁+S ₉)+BP(S ₁₀)+F _B

Therefore, cylinder body still is applied the bottom of the body 1 of making a concerted effort to push to of power with surging.

Fig. 2, Fig. 3, Fig. 4 and Fig. 5 describe several variations of Fig. 1 apparatus embodiments, in these variations, the upper chamber volume that drives impact piston 22 motions reduces owing to increasing an additional chamber, this additional chamber can suitably be connected to atmospheric pressure or be connected on the pressure of low pressure Returning pipe, makes it can ignore to being applied on the piston effect of making a concerted effort of power.The drive chamber of little volume might make piston obtain high-frequency, and when keeping same input flow rate simultaneously, by increasing operating pressure, general power is remained unchanged.

In these figure, parts identical with Fig. 1 note is made identical reference marker number.

In the described embodiment of Fig. 2, to add by the chamber 27 that impact piston and distributor box define, this chamber 27 is connected to all the time on the return line and therefore and is connected on the low pressure by pipeline 28.

By with Fig. 1 relatively, distribute and cover 4 balance and remain unchanged.

On the other hand, because surface 29 is defined in chamber 27, this has reduced the effect on Fig. 1 surface 18, so the balance of distributor box has changed.Because low pressure 29 is always born in the surface, distributor box will bear downward force action, this make a concerted effort even also bigger than the numerical value of making a concerted effort among Fig. 1.With respect to Fig. 1, the balance of cylinder body 2 is with putting forth effort F _BAnd change.

Fig. 3 describes a kind of variation of the embodiment of Fig. 2 equipment, and chamber 30 replaces chamber 27 in Fig. 3, and the surface 32 of distributor box is defined in chamber 30, and atmospheric pressure is always born on surface 32.

In the described embodiment of Fig. 4, unlike Fig. 2 and Fig. 3, the upper chamber 35 that drives usefulness no longer is a doughnut, and chamber 35 defines the surface 36 of distributor box 3, and doughnut 33 is formed, and by impact piston 22, cylinder body 1 and distributor box 3 define.Doughnut 33 always is connected on the low pressure return line by pipeline 34, and there is the function of increase making a concerted effort on the surface 38 that doughnut 33 defines, and the making a concerted effort tightly distributor box of increase can change cylinder body 2 in no instance and distribute and cover 4 balance toward pressing down.

What Fig. 5 described is a kind of variation of the embodiment of Fig. 4 equipment, and chamber 33 is replaced by chamber 37 in this embodiment, and the surface 39 of distributor box is defined in chamber 37, and atmospheric pressure is born on surface 39 all the time.

Fig. 6 describes the variation of a kind of embodiment, and it can be applied to Fig. 2, Fig. 3, and Fig. 4 and Fig. 5 in this embodiment, distribute to cover and directly lead in cylinder body 2 for 4 this moments, rather than lead in distributor box.

As in the previous, distribute the arrangement on each surface of lid and distributor box to make to be applied to power on them always direction is down with joint efforts.

Claims

1. hydraulic impact equipment, it comprises a body, one cylinder body is installed in described body, in described cylinder body, guiding an impact piston, described impact piston is being driven by incompressible fluid and is seesawing, and described piston slap one is installed in the instrument of body lower end, and the fluid distribution that drives described piston motion is what to be finished by a distributor ccontaining in the distributor box that is installed in the body

It is characterized in that described cylinder body and described distributor box are completely contained in the cavity that is defined by described body; Described Boring mill is to being supported on the described body; Described distributor box is installed coaxially with respect to described cylinder body and is mechanically supported thereon; And install by this way and selected size: act on making a concerted effort of hydraulic coupling on described cylinder body and the distributor box perpendicular to surface described equipment axis, that bear pressure, in the whole process of the described equipment cycle of operation, by identical direction, point to a bearing of the body that is arranged in described equipment.

2. hydraulic impact equipment according to claim 1, it is characterized in that, described equipment also comprises with respect to a coaxial installation of described distributor box and an axial support distribution lid thereon, described distribution lid, install by this way and selected size perpendicular to described equipment axis and surface that bear pressure: act on making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, point to one with act on described cylinder body and distributor box on the identical direction of making a concerted effort of hydraulic coupling.

3. hydraulic impact equipment according to claim 2, it is characterized in that, described distribution lid has an annular wall, the outer surface of described annular wall rests on the inner surface of described distributor box, the inner surface portion ground of described annular wall is used to guide described distributor, define to the bottom surface section of described annular wall a doughnut, described doughnut is communicated with low pressure line all the time, this annular wall ends at the part of big cross section, the part of described big cross section is resisted against the end of described distributor box, and be arranged in a Room, described chamber is all the time for high-pressure fluid is arranged.

4. hydraulic impact equipment according to claim 2, it is characterized in that, described distribution lid has an annular wall, the outer surface of described annular wall is supported in the hole of described body, the lower surface of described annular wall rests on the upper surface of described distributor box, the inner surface portion ground of described annular wall is used to guide described distributor and defines a doughnut with described distributor, described doughnut is communicated with low pressure line all the time, this annular wall ends at the part of big cross section in the top, the part of described big cross section is arranged in a Room, and described chamber is all the time for high-pressure fluid is arranged.

5. hydraulic impact equipment according to claim 2, it is characterized in that, described cylinder body and distributor box are pressed against on the described bearing of described body with being surged, and described bearing is made of the end wall in described instrument one side of described cavity, and described cylinder body is installed in this cavity.

6. hydraulic impact equipment according to claim 2, it is characterized in that, in described cylinder body, distributor box and the distribution lid each all has at least two facing surfaces, high pressure and low pressure are alternately born in a surface, and high pressure is born on another surface with surface area bigger than first surface all the time.

7. according to the described hydraulic impact equipment of claim 1, it is characterized in that, described cylinder body and distributor box are pressed against on the described bearing of described body with being surged, and described bearing is made of the end wall in described instrument one side of described cavity, and described cylinder body is installed in this cavity.

8. according to the described hydraulic impact equipment of claim 7, rest on described end face on the end wall of cavity of described body, described cylinder body and be under the atmospheric pressure, simultaneously, its opposite face bears high pressure all the time.

9. described according to Claim 8 hydraulic impact equipment, it also comprises the coaxial mounted and axial support distribution lid thereon with respect to described distributor box, described distribution lid, install by this way and selected size perpendicular to described equipment axis and surface that bear pressure: act on making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, point to one with act on described cylinder body and distributor box on the identical direction of making a concerted effort of hydraulic coupling

It is characterized in that, described distribution lid has an annular wall, the outer surface of described annular wall rests on the inner surface of described distributor box, the inner surface portion ground of described annular wall is used to guide described distributor, defines a doughnut to the bottom surface section of described annular wall, and described doughnut is communicated with low pressure line all the time, this annular wall ends at the part of big cross section, the part of described big cross section is resisted against the end of described distributor box, and is arranged in a Room, and described chamber is all the time for high-pressure fluid is arranged.

10. described according to Claim 8 hydraulic impact equipment, it also comprises coaxial mounted with respect to described distributor box, an and axial support distribution lid thereon, described distribution lid, perpendicular to described equipment axis, and install and selected size by this way on the surface of bearing pressure: act on making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, point to one with act on described cylinder body and distributor box on the identical direction of making a concerted effort of hydraulic coupling

It is characterized in that, described distribution lid has an annular wall, the outer surface of described annular wall is supported in the hole of described body, the lower surface of described annular wall rests on the upper surface of described distributor box, the inner surface portion ground of described annular wall is used to guide described distributor and defines a doughnut with described distributor, described doughnut is communicated with low pressure line all the time, this annular wall ends at the part of big cross section in the top, the part of described big cross section is arranged in a Room, and described chamber is all the time for high-pressure fluid is arranged.

11. according to the described hydraulic impact equipment of claim 7, it is characterized in that, in described cylinder body and the distributor box each all has at least two facing surfaces, and high pressure and low pressure are alternately born in a surface, and high pressure is born on another surface with surface area bigger than first surface all the time.

12. according to the described hydraulic impact equipment of claim 7, it also comprises coaxial mounted with respect to described distributor box, an and axial support distribution lid thereon, described distribution lid, perpendicular to described equipment axis, and install and selected size by this way on the surface of bearing pressure: act on making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, point to one with act on described cylinder body and distributor box on the identical direction of making a concerted effort of hydraulic coupling

13. according to the described hydraulic impact equipment of claim 7, it also comprises the coaxial mounted and axial support distribution lid thereon with respect to described distributor box, described distribution lid, install by this way and selected size perpendicular to described equipment axis and surface that bear pressure: act on making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, point to one with act on described cylinder body and distributor box on the identical direction of making a concerted effort of hydraulic coupling

14. according to the described hydraulic impact equipment of claim 1, it is characterized in that, in described cylinder body and the distributor box each all has at least two facing surfaces, and high pressure and low pressure are alternately born in a surface, and high pressure is born on another surface with surface area bigger than first surface all the time.

15. according to the described hydraulic impact equipment of claim 14, it is characterized in that, described distributor box has two continuous cylindrical parts, wherein the cylindrical part in the face of described piston is sealed by an end wall, described end wall defines a Room with described piston, described chamber alternately is communicated with high pressure and low pressure, and another cylindrical part has than the bigger cross section of first cylindrical part and is arranged in another chamber, and described another chamber is all the time for high-pressure fluid is arranged.

16. according to the described hydraulic impact equipment of claim 15, it also comprises the coaxial mounted and axial support distribution lid thereon with respect to described distributor box, described distribution lid is installed and selected size by this way perpendicular to the surface of bearing pressure of described equipment axis: act on making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, point to one with act on described cylinder body and distributor box on the identical direction of making a concerted effort of hydraulic coupling

It is characterized in that, described distribution lid has an annular wall, the outer surface of described annular wall rests on the inner surface of described distributor box, the inner surface portion ground of described annular wall is used to guide described distributor, define a doughnut to the bottom surface section of described annular wall, described doughnut is communicated with low pressure line all the time, and this annular wall ends at the part of big cross section, the part of described big cross section is resisted against the end of described distributor box, and is arranged in described another chamber.

17. according to the described hydraulic impact equipment of claim 15, it also comprises the coaxial mounted and axial support distribution lid thereon with respect to described distributor box, described distribution lid, install by this way and selected size perpendicular to surface described equipment axis, that bear pressure: act on making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, point to one with act on described cylinder body and distributor box on the identical direction of making a concerted effort of hydraulic coupling

It is characterized in that, described distribution lid has an annular wall, described annular wall outer surface is supported in the hole of described body, the lower surface of described annular wall rests on the upper surface of described distributor box, the inner surface portion ground of described annular wall is used to guide described distributor and defines a doughnut with described distributor, described doughnut is communicated with low pressure line all the time, and this annular wall ends at the part of big cross section in the top, and the part of described big cross section is arranged in described another chamber.

18. according to the described hydraulic impact equipment of claim 14, it also comprises coaxial mounted with respect to described distributor box, an and axial support distribution lid thereon, described distribution lid, perpendicular to described equipment axis, and install and selected size by this way on the surface of bearing pressure: act on making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, point to one with act on described cylinder body and distributor box on the identical direction of making a concerted effort of hydraulic coupling

19. according to the described hydraulic impact equipment of claim 14, it also comprises coaxial mounted with respect to described distributor box, an and axial support distribution lid thereon, described distribution lid, perpendicular to described equipment axis, and install and selected size by this way on the surface of bearing pressure: act on making a concerted effort of hydraulic coupling that described distribution covers, in the whole process of the described equipment cycle of operation, point to one with act on described cylinder body and distributor box on the identical direction of making a concerted effort of hydraulic coupling